Combining THz pump and photoemission probe

ORAL

Abstract

We report progress in combining THz frequency pump with angle-resolved photoemission spectroscopy probe at 100kHz repetition rate for the study of quantum materials out of equilibrium. We characterize THz pulses ex-situ using electro-optical sampling and in-situ by observing streaking of photoelectrons [1]. We highlight science cases like exciting low energy collective modes without the limitations of sample heating and plasmon generation which are present with a higher energy pump beam. In addition, using a spintronics-based THz generator, we plan to tailor the THz frequency and bandwidth to suit specific questions.

[1] Reimann et al. Nature 562 (2018) 396

* This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. Additional funding for NMM is provided through a Graduate Research Fellowship from the National Science Foundation.

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Presenters

  • Noah M Meyer

    Stanford University

Authors

  • Noah M Meyer

    Stanford University

  • Jonathan A Sobota

    Stanford University, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

  • Patrick S Kirchmann

    SLAC - Natl Accelerator Lab, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

  • Matthias C Hoffmann

    SLAC National Accelerator Laboratory, SLAC NATIONAL ACCELERATOR LABORATORY, SLAC, Linac Coherent Light Source, SLAC National Accelerator Laboratory

  • Zhi-Xun Shen

    Stanford University, stanford university